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Performance Tests and Calibration 5

U1241B/U1242B User’s and Service Guide 47

Changing the Meter Calibration Security Code from the Front Panel

1 When the meter is in the unsecured mode, press button for

more than one second to enter Calibration Security Code setting mode.

2 The factory default calibration security code 1234 will be displayed on

primary display.

3 Press or to step each character in the code. Press

or to change the value of the selected character.

4 Press (Save) button, to store new calibration security code.

5 If the new calibration security code has been successfully stored, the

secondary display will show PASS. If the new code failed to save, the

meter will shows error code E07 on the secondary display for

approximately 3 seconds and return to the Calibration Security Code

setting mode.

Unsecuring the Meter Without the Security Code

1 Record the last 4 digit serial numbers of the meter.

2 Turn the rotary switch to .

3 Press and simultaneously to enter the Calibration

Security Code entry mode. The primary display shows 5555 and the

secondary display shows SEC.

4 Press for more than one second to enter Set Default Security

Code mode. The secondary display shows SEr and primary display

shows “5555”.

5 Press or to step each character in the code. Press

and to change the value of the selected character.

6 Set the code, same as the last 4 digit serial number of the meter. Press

(Save) to confirm the entry.

7 If the 4 digit serial number entered is correct, the secondary display

will show PAS. If an invalid code is entered, the meter will shows error

code E03. Ensure that the last 4 digit serial number is entered correctly

and repeat the step 1 to 7.

Agilent Technologies U1241B User's And Service Guide

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